Update ConstrainedWindowViews appearance according to mock

chrome/browser/ui/constrained_window_tab_helper_delegate.h

Index: chrome/browser/ui/constrained_window_tab_helper_delegate.h
diff --git a/chrome/browser/ui/constrained_window_tab_helper_delegate.h b/chrome/browser/ui/constrained_window_tab_helper_delegate.h
index 1216a364fa3c884439aba57d749069698f43c353..7d634470457a923eb58d9b554054fec34558699b 100644
--- a/chrome/browser/ui/constrained_window_tab_helper_delegate.h
+++ b/chrome/browser/ui/constrained_window_tab_helper_delegate.h
@@ -8,6 +8,7 @@
 namespace content {
 class WebContents;
 }
+class BrowserWindow;
 
 class ConstrainedWindowTabHelperDelegate {
  public:
@@ -21,6 +22,9 @@ class ConstrainedWindowTabHelperDelegate {
   virtual void SetTabContentBlocked(content::WebContents* web_contents,
                                     bool blocked);
 
+  // Returns the window for this Browser.
+  virtual BrowserWindow* GetBrowserWindow();
+
  protected:
   virtual ~ConstrainedWindowTabHelperDelegate();
 };